this is the lift kit i used.
http://www.roughcountry.com/gm-suspe...kit-258n2.html
i got it through my work from tri-state enterprises for $750
this will work for the pick up.
to make it work on the suburban you must also use spacers or the superlift soft ride rear coils here
http://www.summitracing.com/parts/sja-c25r/overview/
the reason i went this route on my burb was i wanted 4" lift but all i could get is overpriced lifts with spacers.....rough country only makes 6" for the burb so i went with the truck and those coils. even though they are only 2.5" lift coils keep in mind the rear sits higher than the front already so they mated perfectly with the 4" lift
tires are 305/55/20 nitto terra grapplers which are just a hair over 33/12.50/20's